CN114643688A

CN114643688A - Forming film blowing device for heating and melting plastic particles and using method

Info

Publication number: CN114643688A
Application number: CN202210167265.5A
Authority: CN
Inventors: 耿进辉; 酒国利
Original assignee: Hebei Yuhong Packing Decoration Co ltd
Current assignee: Hebei Yuhong Packing Decoration Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-06-21
Anticipated expiration: 2042-02-23
Also published as: CN114643688B

Abstract

The invention relates to the field of plastic particle forming and film blowing devices, in particular to a forming and film blowing device for heating and melting plastic particles and a using method thereof, wherein the forming and film blowing device comprises a U-shaped support frame and a film blowing mechanism; a material conveying mechanism and a tidying and winding mechanism are respectively arranged on the inner wall of the bottom and the inner wall of the top of the U-shaped support frame; the end part of the supporting plate is provided with a film blowing cylinder, and a mould is arranged in the film blowing cylinder; a cooling mechanism is arranged on the film blowing cylinder; the hollow rod is arranged on the mould; the supporting rod is rotatably arranged on the material conveying mechanism; the guide conical shell is arranged on the peripheral wall of the hollow rod; the multiple groups of worms a are rotationally connected with the inner wall of the top of the guide cone shell; the axis of rotation rotates and sets up on direction awl shell inner wall, is provided with the worm wheel an with worm a meshing in the axis of rotation, sets up the gyro wheel in the axis of rotation, is provided with the bar groove that supplies the gyro wheel to pass on the direction awl shell. The plastic film guiding device not only ensures the contact guiding stabilizing effect on the plastic film, but also can separate the plastic film from the guiding conical shell and prevent the plastic film from being wound and knotted.

Description

Forming film blowing device for heating and melting plastic particles and using method

Technical Field

The invention relates to the field of plastic particle forming and film blowing devices, in particular to a forming and film blowing device for heating and melting plastic particles and a using method thereof.

Background

The traditional film blowing device mainly comprises a film blowing cylinder and a mold arranged in the film blowing cylinder, wherein a mold rod extending to the outside is arranged in the film blowing cylinder, and the mold rod is mainly used for accumulating blown formed films to realize the purposes of fitting and guiding. The mould rod consists of a rod body connected with the blow moulding cylinder and a guide sleeve sleeved outside the rod body. In the use process, the film is easy to be knotted when entering the guide sleeve, so that the processing quality of the film is influenced.

Chinese patent with publication number CN106827481A discloses a blown film equipment, including the organism, locate plastic pellet on the organism and throw the blowing fill, the plastic pellet heating melts the device, the blown film device, tensile finishing device and coiling mechanism, the blown film device is including blown film section of thick bamboo and mould, be equipped with the die-pin that extends to outside in the blown film section of thick bamboo, the die-pin is including the body of rod and the uide bushing of being connected with a blown film section of thick bamboo, the body of rod is the cavity body of rod, its inside has the air flue, set up a plurality of gas pockets that switch on rather than inside air flue on the body of rod, the lower part of uide bushing is equipped with and corresponds the through-hole that sets up and switch on with this gas pocket department, be equipped with seal assembly between the axial both ends of uide bushing and the body of rod. The film blowing equipment is used for preventing the film from being adhered to the roll shaft, preventing the film from being damaged, ensuring stable film guiding and improving the processing quality.

However, the above-mentioned known solutions have the following disadvantages: the meaning that the mould pole exists is exactly to improve plastic film's rising stability, need provide certain effect of depending on for the film, if make uide bushing bottom and film contactless through the air current, the film can't depend on, has reduced the stability of blowing the membrane to a certain extent, and in addition, the air current blows the irregular shake that the film caused the film easily, especially under the inhomogeneous condition of giving vent to anger, shakes more obviously, has further reduced the stability of blowing the membrane.

Disclosure of Invention

The invention aims to solve the problems in the background art and provides a forming film blowing device for heating and melting plastic particles, which is stable in film blowing and can prevent plastic films from being wound and knotted on a guide sleeve, and a using method thereof.

On one hand, the invention provides a forming film blowing device for heating and melting plastic particles, which comprises a U-shaped support frame and a film blowing mechanism; the film blowing mechanism comprises a support plate, a hollow rod, a support rod, a guide conical shell, a worm a and a rotating shaft;

the inner wall of the bottom of the U-shaped support frame is provided with a material conveying mechanism, the material conveying mechanism is vertically provided with an inner cylinder and an outer cylinder, the material conveying mechanism is used for inputting molten plastic particles between the inner cylinder and the outer cylinder, and the inner wall of the top of the U-shaped support frame is provided with a tidying and winding mechanism;

the supporting plate is arranged on the inner wall of the vertical section of the U-shaped supporting frame, the end part of the supporting plate is vertically provided with a film blowing cylinder, a mold is arranged in the film blowing cylinder, and a material conveying channel formed between the inner cylinder body and the outer cylinder body is connected with the mold; a cooling mechanism for cooling the plastic film is arranged on the film blowing cylinder; the hollow rod is vertically arranged on the mould; the supporting rod is vertically and rotatably arranged on the material conveying mechanism and is positioned in the hollow rod; the guide conical shell is arranged on the peripheral wall of the hollow rod, and the top of the guide conical shell is closed; the worm a is rotatably connected with the inner wall of the top of the guide conical shell, through holes for the bottom of the worm a to pass through are formed in the hollow rod, a plurality of groups of the worm a are arranged, and a power assembly for driving the support rod and the worm a to rotate is arranged on the U-shaped support frame; the axis of rotation rotates and sets up on direction awl shell inner wall, is provided with the worm wheel an with worm a meshing in the axis of rotation, sets up the gyro wheel in the axis of rotation, is provided with the bar groove that supplies the gyro wheel to pass on the direction awl shell, and axis of rotation and worm wheel an all set up the multiunit.

Preferably, the material conveying mechanism comprises a material conveying cylinder, a heating ring, a motor a, a material pushing screw and a transition box; the inner wall of the bottom of the U-shaped support frame is sequentially provided with a support block a, a support block b and a support block c from right to left; the conveying cylinder is horizontally arranged on the supporting block a, a feeding pipe is vertically arranged on the conveying cylinder, the left end of the conveying cylinder is communicated with the inner cavity of the transition box, and the right end of the conveying cylinder is closed; the heating ring is arranged on the supporting block b, is sleeved on the material conveying cylinder and is positioned between the transition box and the feeding pipe; the motor a is arranged at the right end of the material conveying cylinder, an output shaft of the motor a is in transmission connection with the material pushing screw rod, and the material pushing screw rod extends into the material conveying cylinder; the transition box sets up on supporting shoe c, and transition box top sets up the multiunit feed chute, and the feed chute is located between interior barrel and the outer barrel.

Preferably, the cooling mechanism comprises an annular air ring, a connecting pipe and a blowing device; the annular air ring is arranged on the film blowing cylinder, and the inner cavity of the annular air ring is communicated with the connecting pipe; the air blowing device is arranged on the supporting plate, and an air outlet of the air blowing device is connected with the connecting pipe.

Preferably, the power assembly comprises a worm wheel b, a worm b, a sleeve and a motor b; the worm wheel b is arranged on the support rod and is positioned below the hollow rod; the sleeve horizontally penetrates through the inner cylinder and the outer cylinder; the motor b is arranged on the inner wall of the vertical section of the U-shaped support frame, an output shaft of the motor b is in transmission connection with the worm b, the worm b penetrates through the sleeve and extends into the inner cylinder body, and the worm b is meshed with the worm wheel b; the support rod and the worm a are provided with a bevel gear a and a bevel gear b which are meshed with each other.

Preferably, the top of the hollow rod is closed, and the top of the support rod is rotatably connected with the inner wall of the top of the hollow rod.

Preferably, the outer wall of the roller is provided with a heat insulation layer.

Preferably, the multiple groups of strip-shaped grooves are uniformly distributed along the circumference by taking the axis of the guide cone shell as the center.

On the other hand, the invention provides a using method of a forming film blowing device for heating and melting plastic particles, which comprises the following steps: s1, adding plastic particles into the conveying cylinder from the feeding pipe, pushing the plastic particles into the transition box in a molten state under the work of the heating ring and the motor a, and then enabling the molten plastic to enter the mold through the conveying channel; s2, the molten plastic moves upwards after being molded by the mold; s3, cooling the formed plastic film through the connecting pipe and the annular air ring by the air blowing device; s4, moving the plastic film upwards to contact with the rollers, and driving the rollers to rotate synchronously by the motor b, wherein the linear speed of the contact position of the plastic film is inclined upwards; s5, arranging and winding the plastic film by the arranging and winding mechanism.

Compared with the prior art, the invention has the following beneficial technical effects: the plastic particles are guided into the film blowing mechanism from the material conveying mechanism, the plastic film moves upwards after being formed by the die and enters the guiding conical shell area after being cooled by the cooling mechanism, and the plastic film is contacted with the plurality of rotating groups of rollers, so that the guiding stabilizing effect on the plastic film is ensured, the plastic film and the guiding conical shell can be separated, the plastic film is prevented from being wound and knotted, and the film blowing stability and the forming quality of the plastic film are improved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a front cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the structure of the film blowing mechanism

FIG. 4 is an enlarged schematic view of the point A in FIG. 3;

fig. 5 is an enlarged schematic view of B in fig. 3.

Reference numerals: 1. a U-shaped support frame; 2. a supporting block a; 3. a supporting block b; 4. a supporting block c; 5. a delivery cylinder; 6. a feed pipe; 7. heating a ring; 8. a motor a; 9. a pushing screw; 10. a transition box; 11. a support plate; 12. a film blowing cylinder; 13. a mold; 14. an inner cylinder; 15. an outer cylinder; 16. a feed chute; 17. an annular wind ring; 18. a connecting pipe; 19. a blower device; 20. a hollow shaft; 21. a support bar; 22. a guide cone shell; 23. a worm a; 24. a through hole; 25. a bevel gear a; 26. a bevel gear b; 27. a rotating shaft; 28. a worm wheel a; 29. a strip-shaped groove; 30. a roller; 31. a worm wheel b; 32. a worm b; 33. a sleeve; 34. a motor b; 35. and (7) arranging and winding mechanisms.

Detailed Description

Example one

The invention provides a forming film blowing device for heating and melting plastic particles, which comprises a U-shaped support frame 1 and a film blowing mechanism; the film blowing mechanism comprises a supporting plate 11, a hollow rod 20, a supporting rod 21, a guide conical shell 22, a worm a23 and a rotating shaft 27;

as shown in fig. 1 and 3, a material conveying mechanism is arranged on the inner wall of the bottom of the U-shaped support frame 1, an inner cylinder 14 and an outer cylinder 15 are vertically arranged on the material conveying mechanism, the material conveying mechanism is used for inputting molten plastic particles between the inner cylinder 14 and the outer cylinder 15, and a finishing and winding mechanism 35 is arranged on the inner wall of the top of the U-shaped support frame 1;

as shown in fig. 2-3, the supporting plate 11 is arranged on the inner wall of the vertical section of the U-shaped supporting frame 1, the end of the supporting plate 11 is vertically provided with the film blowing cylinder 12, the film blowing cylinder 12 is internally provided with a mold 13, and a material conveying channel formed between the inner cylinder 14 and the outer cylinder 15 is connected with the mold 13; the film blowing cylinder 12 is provided with a cooling mechanism for cooling the plastic film; the hollow rod 20 is vertically arranged on the mold 13; the support rod 21 is vertically and rotatably arranged on the material conveying mechanism, the support rod 21 is positioned in the hollow rod 20, the top of the hollow rod 20 is closed, and the top of the support rod 21 is rotatably connected with the inner wall of the top of the hollow rod 20; the guide cone shell 22 is arranged on the peripheral wall of the hollow rod 20, and the top of the guide cone shell 22 is closed.

As shown in fig. 3-4, the worm a23 is rotatably connected with the inner wall of the top of the guide cone shell 22, the hollow rod 20 is provided with a through hole 24 for the bottom of the worm a23 to pass through, the worms a23 are provided with a plurality of groups, and the U-shaped support frame 1 is provided with a power assembly for driving the support rod 21 and the worm a23 to rotate.

As shown in fig. 5, the rotating shaft 27 is rotatably disposed on the inner wall of the guide cone shell 22, a worm wheel a28 engaged with the worm a23 is disposed on the rotating shaft 27, the roller 30 is disposed on the rotating shaft 27, the outer wall of the roller 30 is provided with a heat insulation layer, a plurality of groups of strip-shaped grooves 29 for the roller 30 to pass through are disposed on the guide cone shell 22, the rotating shaft 27 and the worm wheel a28 are both provided with a plurality of groups, and the plurality of groups of strip-shaped grooves 29 are uniformly distributed along the circumference by taking the axis of the guide cone shell 22 as the center.

In the embodiment, plastic particles are guided into the film blowing mechanism from the material conveying mechanism, the plastic film moves upwards after being formed by the die 13 and enters the area of the guide conical shell 22 after being cooled by the cooling mechanism, and the plastic film is contacted with the plurality of groups of rotating rollers 30, so that the guide stabilizing effect on the plastic film is ensured, the plastic film is separated from the guide conical shell 22, the plastic film is prevented from being wound and knotted, and the film blowing stability and the forming quality of the plastic film are improved.

Example two

As shown in fig. 1-2, compared with the first embodiment, the material conveying mechanism of the forming and film blowing device for heating and melting plastic particles of the present invention includes a material conveying cylinder 5, a heating ring 7, a motor a8, a material pushing screw 9 and a transition box 10; the inner wall of the bottom of the U-shaped support frame 1 is sequentially provided with a support block a2, a support block b3 and a support block c4 from right to left; the material conveying cylinder 5 is horizontally arranged on the supporting block a2, the material conveying cylinder 5 is vertically provided with a material inlet pipe 6, the left end of the material conveying cylinder 5 is communicated with the inner cavity of the transition box 10, and the right end of the material conveying cylinder 5 is closed; the heating ring 7 is arranged on the supporting block b3, the heating ring 7 is sleeved on the material conveying cylinder 5, and the heating ring 7 is positioned between the transition box 10 and the feeding pipe 6; the motor a8 is arranged at the right end of the feed delivery cylinder 5, the output shaft of the motor a8 is in transmission connection with the material pushing screw rod 9, and the material pushing screw rod 9 extends into the feed delivery cylinder 5; the transition box 10 is arranged on the supporting block c4, a plurality of groups of feed chutes 16 are arranged on the top of the transition box 10, and the feed chutes 16 are positioned between the inner barrel 14 and the outer barrel 15.

In this embodiment, plastic particles are fed into the feeding cylinder 5 from the feeding pipe 6, and under the operation of the heating ring 7 and the motor a8, the plastic particles are pushed into the transition box 10 in a molten state, and then the molten plastic enters the mold 13 through the feeding passage, thereby completing the feeding process.

EXAMPLE III

As shown in fig. 3, compared with the first embodiment, the forming and film blowing apparatus for heating and melting plastic particles according to the present invention includes an annular air ring 17, a connecting pipe 18 and a blowing device 19; the annular air ring 17 is arranged on the film blowing cylinder 12, and the inner cavity of the annular air ring 17 is communicated with the connecting pipe 18; the air blowing device 19 is arranged on the supporting plate 11, and an air outlet of the air blowing device 19 is connected with the connecting pipe 18. The annular air ring 17 has good cooling effect on the plastic film.

Example four

As shown in fig. 3-4, compared with the first embodiment, the power assembly of the molding and film blowing apparatus for heating and melting plastic particles and the method of using the same of the present invention comprises a worm wheel b31, a worm b32, a sleeve 33 and a motor b 34; the worm wheel b31 is arranged on the support rod 21, and the worm wheel b31 is positioned below the hollow rod 20; the sleeve 33 horizontally penetrates through the inner cylinder 14 and the outer cylinder 15; the motor b34 is arranged on the inner wall of the vertical section of the U-shaped support frame 1, the output shaft of the motor b34 is in transmission connection with the worm b32, the worm b32 penetrates through the sleeve 33 and extends into the inner cylinder 14, and the worm b32 is meshed with the worm wheel b 31; the support rod 21 and the worm a23 are provided with a bevel gear a25 and a bevel gear b26 which are meshed with each other.

In this embodiment, the motor b34 drives the worm b32 to rotate, the worm b32 drives the worm wheel b31 and the support rod 21 to rotate, the support rod 21 drives the worm a23 to rotate through the bevel gear a25 and the bevel gear b26, and then the worm wheel a28 and the rotating shaft 27 drive the roller 30 to rotate.

EXAMPLE five

The use method of the embodiment of the forming and film blowing device for heating and melting the plastic particles comprises the following steps:

s1, adding plastic particles into the conveying cylinder 5 from the feeding pipe 6, pushing the plastic particles into the transition box 10 in a molten state under the work of the heating ring 7 and the motor a8, and then enabling the plastic in the molten state to enter the mold 13 through the conveying channel;

s2, the molten plastic moves upwards after being molded by the mold 13;

s3, cooling the formed plastic film by the air blowing device 19 through the connecting pipe 18 and the annular air ring 17;

s4, moving the plastic film upwards to contact with the rollers 30, and operating the motor b34 to drive the rollers 30 to rotate synchronously, wherein the linear speed of the contact position of the plastic film is inclined upwards;

s5, arranging and winding the plastic film by the arranging and winding mechanism 35.

In this embodiment, the plastic film after the film blowing molding is in contact with the plurality of groups of rotating rollers 30, so that the contact guiding stabilizing effect on the plastic film is ensured, the plastic film and the guiding conical shell 22 can be separated, the plastic film is prevented from being wound and knotted, and the film blowing stability and the molding quality of the plastic film are improved.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A plastic particle heating melting forming film blowing device is characterized by comprising a U-shaped support frame (1) and a film blowing mechanism; the film blowing mechanism comprises a support plate (11), a hollow rod (20), a support rod (21), a guide conical shell (22), a worm a (23) and a rotating shaft (27);

a material conveying mechanism is arranged on the inner wall of the bottom of the U-shaped support frame (1), an inner cylinder (14) and an outer cylinder (15) are vertically arranged on the material conveying mechanism, the material conveying mechanism is used for inputting molten plastic particles between the inner cylinder (14) and the outer cylinder (15), and a sorting and winding mechanism (35) is arranged on the inner wall of the top of the U-shaped support frame (1);

the support plate (11) is arranged on the inner wall of the vertical section of the U-shaped support frame (1), the end part of the support plate (11) is vertically provided with the film blowing cylinder (12), the film blowing cylinder (12) is internally provided with a mold (13), and a material conveying channel formed between the inner cylinder body (14) and the outer cylinder body (15) is connected with the mold (13); a cooling mechanism for cooling the plastic film is arranged on the film blowing cylinder (12); the hollow rod (20) is vertically arranged on the mould (13); the supporting rod (21) is vertically and rotatably arranged on the material conveying mechanism, and the supporting rod (21) is positioned in the hollow rod (20); the guide conical shell (22) is arranged on the peripheral wall of the hollow rod (20), and the top of the guide conical shell (22) is closed; the worm a (23) is rotatably connected with the inner wall of the top of the guide conical shell (22), through holes (24) for the bottom of the worm a (23) to pass through are formed in the hollow rod (20), a plurality of groups of worms a (23) are arranged, and a power assembly for driving the support rod (21) and the worm a (23) to rotate is arranged on the U-shaped support frame (1); the rotating shaft (27) is rotatably arranged on the inner wall of the guide conical shell (22), a worm wheel a (28) meshed with the worm a (23) is arranged on the rotating shaft (27), the roller (30) is arranged on the rotating shaft (27), a strip-shaped groove (29) for the roller (30) to penetrate is formed in the guide conical shell (22), and multiple groups of rotating shafts (27) and worm wheel a (28) are arranged.

2. The forming and film blowing device for heating and melting plastic particles as claimed in claim 1, wherein the feeding mechanism comprises a feeding cylinder (5), a heating ring (7), a motor a (8), a pushing screw (9) and a transition box (10); the inner wall of the bottom of the U-shaped support frame (1) is sequentially provided with a support block a (2), a support block b (3) and a support block c (4) from right to left; the material conveying cylinder (5) is horizontally arranged on the supporting block a (2), a material inlet pipe (6) is vertically arranged on the material conveying cylinder (5), the left end of the material conveying cylinder (5) is communicated with the inner cavity of the transition box (10), and the right end of the material conveying cylinder (5) is closed; the heating ring (7) is arranged on the supporting block b (3), the heating ring (7) is sleeved on the material conveying cylinder (5), and the heating ring (7) is positioned between the transition box (10) and the feeding pipe (6); the motor a (8) is arranged at the right end of the material conveying cylinder (5), an output shaft of the motor a (8) is in transmission connection with the material pushing screw rod (9), and the material pushing screw rod (9) extends into the material conveying cylinder (5); transition box (10) set up on supporting shoe c (4), and transition box (10) top sets up multiunit feed chute (16), and feed chute (16) are located between interior barrel (14) and outer barrel (15).

3. The apparatus for molding and blowing a film for heating and melting plastic pellets as claimed in claim 1, wherein the cooling means comprises an annular air ring (17), a connecting pipe (18) and an air blowing means (19); the annular air ring (17) is arranged on the film blowing cylinder (12), and the inner cavity of the annular air ring (17) is communicated with the connecting pipe (18); the air blowing device (19) is arranged on the supporting plate (11), and an air outlet of the air blowing device (19) is connected with the connecting pipe (18).

4. The apparatus for molding and blowing a film for heating and melting plastic pellets as claimed in claim 1, wherein the power unit comprises a worm wheel b (31), a worm b (32), a sleeve (33) and a motor b (34); the worm wheel b (31) is arranged on the support rod (21), and the worm wheel b (31) is positioned below the hollow rod (20); the sleeve (33) horizontally penetrates through the inner cylinder body (14) and the outer cylinder body (15); the motor b (34) is arranged on the inner wall of the vertical section of the U-shaped support frame (1), an output shaft of the motor b (34) is in transmission connection with the worm b (32), the worm b (32) penetrates through the sleeve (33) and extends into the inner cylinder (14), and the worm b (32) is meshed with the worm wheel b (31); the support rod (21) and the worm a (23) are provided with a bevel gear a (25) and a bevel gear b (26) which are meshed with each other.

5. The apparatus for forming and blowing a film for heating and melting plastic pellets as claimed in claim 1, wherein the hollow rod (20) is closed at the top, and the top of the support rod (21) is rotatably connected to the inner wall of the top of the hollow rod (20).

6. The apparatus for molding and blowing a film for melting plastic pellets by heating as claimed in claim 1, wherein a heat insulating layer is provided on the outer wall of the roller (30).

7. The apparatus for forming and blowing films for heating and melting plastic pellets as claimed in claim 1, wherein the plurality of sets of strip-shaped grooves (29) are uniformly distributed circumferentially around the axis of the guide cone shell (22).

8. A method for using a molding and film blowing apparatus for melting plastic pellets by heating according to any one of claims 1 to 7, comprising the steps of:

s1, adding plastic particles into a material conveying cylinder (5) from a material feeding pipe (6), pushing the plastic particles into a transition box (10) in a molten state under the work of a heating ring (7) and a motor a (8), and then feeding the molten plastic into a mold (13) through a material conveying channel;

s2, the molten plastic is molded by the mold (13) and then moves upwards;

s3, cooling the formed plastic film by a blower (19) through a connecting pipe (18) and an annular air ring (17);

s4, moving the plastic film upwards to contact with the rollers (30), and operating the motor b (34) to drive the rollers (30) to rotate synchronously, wherein the linear speed of the contact position of the plastic film is inclined upwards;

s5, arranging and winding the plastic film by the arranging and winding mechanism (35).